Remove ExactSizeIterator bounds, update inplace_it usage

[kvark]

Fixes #3609 This PR is a product of wonderful collaboration with @zakarumych and @NotIntMan. Thank you guys!

PR checklist:

• [x] make succeeds (on *nix)
• [x] make reftests succeeds
• [ ] tested examples with the following backends:

Tested on wgpu-rs examples.

[kvark]

fairly confident in this change, also well tested bors r+

[bors[bot]]

Build succeeded:

• Android Stable
• Dependency Check
• iOS Stable
• MacOS Nightly
• MacOS Stable
• Ubuntu Nightly
• Ubuntu Stable
• Web Assembly
• Windows Nightly
• Windows Stable